DEVELOPMENT OF GENERAL-PURPOSE LES SOLVER OF AIRCRAFT TURBOFAN ENGINE COMBUSTOR

摘要

PROBLEM TO BE SOLVED: To provide a simulation system which comprehensively estimates such a geometrically-complicated interior flow as occurring inside an engine since a numerical simulation technology for estimating a combusting flow containing lean premix flames inside an aircraft engine.;SOLUTION: A system development based on unstructured grids makes it possible to support such a particular and complicated geometric figure as an inside of the combustor of an aircraft jet turbofan engine. There is provided a system for analyzing nonstationary behavior of turbulence including combustion in the unstructured grids by using Large Eddy Simulation. A sophisticated combustion field can be estimated by coupling a combustion surface and a distribution of a fuel mixing rate to analyze the nonstationary behavior and thereby analyzing software is built which acts as a total system into which all these features meet.;COPYRIGHT: (C)2009,JPO&INPIT